Samuel



tntrd' giedre SAMUEL R. BARTLETT, OF CHICAGO, IULINOIS.

Letters Patent No. 106,454, dated Augustl, 1870.

' IMFROVED AUTOMATIC LUBRICATING-SLEEVE.

The Schedule referred to in these` Letters Patent and making part of the same.

To whom/it hief/concern Be it known thatjl, SAMUEL 1t. BARTLETT, of the city of Chicago, in the county of Cook and State 0f Illinois, have invented a new and 4useful Improvement in Automatic Lubricating- Sleeves; and I4 dodeclare that thc following isa true and accurate description thereof, reference being had to the accompanying drawing and to the-letters of reference marked thereon and being apart of this specification.

Figure 1 is a section view of my invention. Figure 2 is across-section of my invention ou the line a. u. i

Like 'elet-ters refer to like parts in each figure. This invention relates to an improvement iu self' "oilug bearings, and consists in the construction oi' a sleeve, which is fixed fast to the shaft by a set-screw or other means, and made hollow to contain the oil or other lubricating material used, and provided with slots or apertures through its outside shell, which are filled with wood, cotton-waste, or other suitable conductiu materia-l, through which the'lubricating matter pa ses uto the outer surface of the sleeve.

Upou this sleeve, so kept self-lubricated, the bearings, especially that loose pulleys, revolve instead of upon the shaft, as usual. l

In the drawing-L A is a hollow sleeve, fixed fast to the shaft B by the set-sc rew C. l f

D represents the hollow part of ythe sleeve,`1led with lubricating material, and

F, theslots, filled with wood or other conductor, through which the lubricating material passes to the outer; surface of the sleeve.

H is an orifice, through which jthe lubricating material is pourl into the hollow part of the sleeve, closed air-tight by the screw or plug G.

The advantages of thisiuvention are, that the hear-v ing is kept constantly lubricated, without waste of the material used for that purpose, thus avoiding the dani?`` ger of becoming dry and cutting. l

' i The bearing can be repaired more easily aud economically, as thc shaft escapes wear entirely, it coming on the sleeve, which can be removed when it becomes necessary, and a newl one fitted toalarger hole.,l

poses set forth.

SAM. R. BARTLETT.

Witnesses:

GEO. O. MANCHESTER, SAML. B. BELL. 

